He got hit with a thigh in his face while the knee was on it's way to his chest. You can clearly see that from all angles. That right hook to the left temple when he let his guard down for a split second to see if the guy stopped swinging on him yet @ exactly 3:10 is what really dazed him.

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“If you can convince the lowest white man he’s better than the best colored man, he won’t notice you’re picking his pocket. Hell, give him somebody to look down on, and he’ll empty his pockets for you.”
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